{
  "manageEntity": {
    "action": "Update",
    "entityId": "906491826",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x2001fb1b3b8e36b513a653fb68f064acc7ac61d8fcdfa842c5439c00159ed7b9",
    "signature": "0x932a1c35f22bbd7c8310fc9d02e3a52ee2fdfb14325ccd9edc723dfcfc6a9a5258e2fdba1b7da765778e2eae7412b91696c5cabf2c8b876b18766353bd5e05741c",
    "signer": "0x20DD2eBd4Fa6CCD0e13f61BE3B0361fA869D2CA5",
    "userId": "906491826"
  }
}